<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>TestAPI</title>
</head>

<body>
    <input type="text" id="message">
    <button id="submit">提交</button>

    <script>
        // 创建 websocket 实例
        let websocket = new WebSocket("ws://127.0.0.1:8080/test")
        // 需要给实例挂载一些回调函数
        websocket.onopen = function () {
            console.log("连接建立")
        }

        websocket.onmessage = function (e) {
            console.log("收到消息: " + e.data)
        }

        websocket.onerror = function () {
            console.log("连接异常")
        }

        websocket.onclose = function () {
            console.log("连接关闭")
        }

        // 实现点击按钮后, 通过 websocket 发送请求
        let input = document.querySelector('#message')
        let button = document.querySelector('#submit')
        button.onclick = function () {
            console.log("发送消息: " + input.value)
            websocket.send(input.value)
        }
    </script>
</body>

</html>